Arrived at length at the gateway, it was seen that the structure consisted of a wall, some thirty feet high, very solidly built of great blocks of masonry dressed to a perfectly smooth face, and so accurately jointed that, even at the distance of a few paces, the joints were scarcely perceptible. The wall was built with a vertical face to a height of some twenty feet, above which it swelled outward in the form known as a “bull-nose,” the upper surface of which sloped so steeply upward as to render it unclimbable; so that, even if a man, or men, should climb as far as the swell of the bull-nose by means of a pole or ladder, the would-be intruders could get no farther. The wall was semi-circular in plan, jutting out from the edge of the cliff for a distance of some fifteen feet at either end and descending the face of the cliff, diminishing as it went, until it died away to nothing, some fifty feet below, rendering it an impossibility for anyone to pass round either end of it. The middle of the wall was so constructed as to form a watch-tower, some thirty feet square, with a flat roof, upon which it appeared a sentinel was always posted; and it was in the base of the watch-tower that the gateway, about ten feet wide, was pierced, the opening being filled with a pair of wooden doors of exceedingly solid construction.

As the party halted, the sentinel, who wore a burnished helmet and corselet that flashed in the sun like gold and was the colour of gold, leaned over the parapet and shouted to them what seemed to be an inquiry; but the words, though quite distinctly pronounced, were utterly unintelligible to all.

“Wants to know our business, I guess,” remarked Earle. “Step forward, Inaguy, and explain that we wish to pay our respects to his majesty, El Dorado. Try him in all the dialects you happen to be acquainted with.”

Inaguy accordingly stepped forward and did his best, but without avail; the sentinel, though he listened attentively to all that was said, could evidently make nothing of it, replying only with shakes of the head.

“It is the usual fate of the explorer who enters a new country,” remarked Earle. “He is unable to understand or make himself understood. But there is always the language of signs to fall back upon. Let me see what I can do in that way.”

Stepping forward and thus claiming the sentinel’s attention, he pointed first to himself, then to Dick, then, with a comprehensive wave of the hand, to the Indian carriers, and finally to the door, motioning with his hands as though opening it. This seemed to be intelligible to the sentinel, for he nodded, and stepping aside a few paces, shouted a few words to someone below in the interior of the tower. A few moments later a second man appeared on the top of the tower and, approaching the parapet, regarded the would-be visitors intently. The inspection appeared to result satisfactorily, for a few moments later he disappeared; a short interval of waiting ensued, then the gate swung open, and he came fearlessly forward, while the gates swung to behind him, and there was a sound of ponderous bars being shot into their sockets.

Judging from the richness of his dress and the quiet dignity of his manner, the man was probably an officer. He was apparently about thirty years of age, some five feet ten inches in height, and was well-made though perhaps a trifle slight in build. In complexion he was somewhat sallow, but he was distinctly good-looking, with a somewhat Hebrew cast of features, and with coal-black hair, eyebrows, beard and moustache, the beard trimmed square, and the hair worn rather long, trimmed square across the nape of the neck, with a short fringe trimmed square across the forehead. His eyes were black and piercing, but there was a straightforward honest look in them that instantly created a favourable impression. He was attired in helmet and corselet, apparently of gold, like those worn by the sentinel, but with the addition of a splendid plume of long black feathers surmounting his helmet. Beneath his corselet appeared a sort of skirt of fine chain mail reaching to just below the knees, and his legs were protected by greaves made of the same metal as the rest of his armour. His feet were encased in buskins, a sash of black and yellow passed over his left shoulder and was knotted upon his right hip, while at his left dangled a short sword encased in a jewelled scabbard, supported by a jewelled belt or chain of broad links, all made of the same gold-like metal. As he strode forward, his eyes glancing questioningly from Earle to Dick and back again, he threw up his open right hand, palm forward, and said a few words, which sounded like a greeting, in a full but very pleasant tone of voice. Like the speech of the sentinel, his words were quite unintelligible to those addressed, but his action seemed easily interpretable as the sign of peace, and Earle instantly imitated it.

“Thanks, old chap,” the American replied, beaming amiably upon the soldier; “it is good of you to say so; but I’m awfully sorry that I can’t understand you. The fact is, you know, that I and my friend Cavendish”—he indicated Dick with a wave of his hand—“have come all the way from New York expressly to discover your city—which I learn is called Ulua—”

The officer instantly caught the name Ulua and repeated it, smilingly pointing in the direction of the city.

“Yes,” proceeded Earle, “that is so. I guess you get me all right. We want to go in through that gate and make the acquaintance of your king, El Dorado, or whatever his name may be. Do you get that?”